xj 750 seca instrument cluster swap

after a recent spill on my 82 xj 750r seca (5n1 vin) I am looking for some parts and advice. Will an earlier 81?instrument cluster swap straight into my bike, my speedo was previously a 80mph/120kmh unit and I may be able to get hold of a 220kph unit that looks almost identical except for the speedo. As for the forks the spill was low speed in wet weather, didn't hit anything, or flip, I touched the front brake and went down over a white line and now I noticed the forks are twisted, could they twisted in the triple tree or bent tubes? and how do I check, short of pulling the forks off an running a dial indicator on the top of the tubes while clamping the outer tube down? thanks Graham (south Australia)

 

Yes!

FORK TUBE ALIGNMENT CHECKING:

One feature of front fork systems that is typically overlooked is assuring that the two fork tubes are properly aligned with each other........that they are precisely spaced apart from each other, and also exactly aligned with each other in their "rake angles", and not "twisted" in relation to each other. Hitting large objects or deep holes with the front wheel, dropping the bike, slight bending or fatigue of the steering crown or lower bracket, or any other sort of injuries can result in fork tubes that are not perfectly in synch with each other, and that can cause both annoying and dangerous steering, handling, and braking problems.

Therefore it will be worth your while to check your fork tube alignment periodically, especially after you've had them out for a rebuild.......this will be the most time-efficient opportunity you'll have for this procedure, since it requires removal of the front wheel, headlight, and other assorted front-end components.

Although the following step-by-step guide was written for BMW owners, the same techniques and guidelines will apply on your bike:

http://w6rec.com/duane/bmw/fork/title.html


If you choose not to go through the above process, you can perform the following "poor-man's" fork alignment techniques as described in the following sections:

http://xjbikes.com/forums/index.php?threads/16145

and

http://xjbikes.com/forums/index.php?threads/9323

and

http://www.motorcycleproject.com/text/stiction_tuning.html

and

http://www.xjbikes.com/forums/threads/dropped-bike-need-help.97887/#post-533302